| HDD | hard disk drive | 硬盘驱动器 |
| HDD | Howard Dwaine Dorough | 霍伊·多罗夫 |
| HDD | Heating Degree Days | 加热度天数 |
| HDD | Heat Degree Days | 热度天数 |
| HDD | higher dental diploma | 高等牙科文凭 |
| HDD | Hits Daily Double | 每日点击量翻倍 |
| HDD | High-Dose Dexamethasone | 大剂量地塞米松 |
| HDD | High Density Disk | 高密度磁盘 |
| HDD | Happy Dog Days | 三伏天快乐 |
| HDD | Heavy Duty Dry | 重型干式 |
| HDD | Hub Direct Display | 轮毂直接显示 |
| HDD | Quantum Corporation | Quantum公司 |
| HDD | Horizontal Directional Drill | 水平定向钻 |
| HDD | Heavy Duty Diesel | 重型柴油机 |
| HDD | Hyderabad, Pakistan | 巴基斯坦海得拉巴 |
| HDD | Human Disorientation Device | 人体定向装置 |
| HDD | Horizontal Directional Drilling | 水平定向钻井 |
| HDD | Hardware Design Document | 硬件设计文件 |
| HDD | Head Down Display | 头向下显示 |
| HDD | Head-Down Display | 俯视显示 |
| HDD | High Density Data | 大密度数据 |
| HDD | Hard Decision Decoding | 硬判决译码 |
| HDD | Heating Degree Days (weather derivatives / insurance index converting temperature into prices) | 加热度天(天气衍生品/保险指标转换温度成价格) |
| HDD | Hierarchical Data Dictionary | 分层数据字典 |
| HDD | Holographic Disk Drive | 全息光盘驱动器 |
| HDD | Hyderabad (Pakistan) | 海德拉巴(巴基斯坦) |
| HDD | Health Data Dictionary | 健康数据字典 |
| HDD | Heavy-Duty Diesel | 重型柴油机 |
| HDD | Hammer Debounce Device (airguns) | 液压锤防抖装置(气枪) |
| HDD | Hot Diggity Dog | 热狗 |
| HDD | Hrvatski Dalmatinski Dom (Croatian Dalmatian Home, political party) | Hrvatski Dalmatinski Dom(克罗地亚达尔马提亚之家,政党) |
| HDD | Highly Doped Drain | 高掺杂排水管 |
| HDD | High Density Diskette | 高密度磁盘 |
| HDD | high dose depth | 高剂量深度 |